Bacteria

Bacteria

1. unicellular

2. Found in Air,soil, water

3. Can be non-pathogenic

4. Conditions for growth

   • Temperature
   • Food
   • Oxygen
   • pH Levels
   • Moisture
   • Time

5. Structure of Bacteria

   • Capsule - Protective Layer
   • Cell Wall - Gives cell shape
   • Cell Membrane - semirane-permeable membrane
   • Nuclear Material - Distinguishes one bacteria from another
   • Ribosome - Makes proteins
   • Flagellae - Allows cell to move

6. Reproduction of Bacteria

   • Binary Fission
     • 1.Nuclear material divides in two
       • 2. Membrane forms between two sets of nuclear Material
         • 3. cell wall forms dividing cell into two daughter cells
           • 4. Cells separate
             • Bacteria produce rapidly

7. Advantages and disadvantages of Bacteria

   • Advantages
     • Produce vit B & K
       • used as a starter culture of yoghurt
         • Breaks down waste matter
   • Disadavantage
     • Cause food spoilage
       • cause food poisoning
         • cause disease ie. Cholera

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